Probably, at some point in their career, every police officer has wanted to do this. It's like a pissed-off flight attendant jumping out on the slide of an airplane. But the editorial board of the El Paso Times figures:
Perhaps the last straw was the perception of police officers that their commanders' corruption and links to drugs and the cartels were putting the officers' lives in danger. That could be quite a motivation.Indeed.
The caption of these AP photos by Raymundo Ruiz says:
Federal police agents beat a fellow officer after a top fellow officer was detained at his hotel room by his subordinates in Ciudad Juarez, northern Mexico, Saturday, Aug. 7, 2010. Around 200 federal police officers protested Saturday demanding the dismissal of fellow police inspector Salomón Alarcón Olvera, aka "El Chaman", accusing him of being linked to drug cartels and having participated in kidnappings, executions and extortions.